Abiotic factors do not compete for food, but rather affect the competition for food.
Biotic and abiotic factors are present in an organism's environment and they affect its life. Biotic factors include the living components, while the non-living factors (such as wind, water, soil, etc.) constitute the abiotic factors. Competition for food arises between different organisms and this competition is affected by biotic and abiotic factors. Other organisms (biotic factors) directly or indirectly compete for food with a given organism. For example, deer compete with other herbivores for food. One competitor may have more or less predators, thereby affecting the competition for food. Similarly, abiotic factors affect the competition for food between organisms. The climatic variables may be more conducive to the life of one organism as compared to others. Space is another abiotic factor that may affect some species. Species that need less space may be more apt to survive than those that need large spaces to live. The species that is surviving will outcompete the other species for resources.
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